User's Manual

20-496 Owner’s Manual Draft Page 45/78
apply attenuation to all calls received on that trunking system. You can press ATT during a trunking call or
while manually tuned to a system control channel to toggle attenuation on or off for the trunking system.
To use the global attenuator:
1. Press FUNC and then ATT to set the attenuator to global mode. Global ATT will appear for 2 seconds at
the bottom line, and then ATT- appears in the scanner’s display while scanning.
2. Press ATT to activate the attenuator. ATTon appears in the bottom line of the display. When the scanner
is stopped on a channel or searching, a will appear in the top line of the display. Press ATT to toggle global
attenuation off. ATT- appears on the bottom line of the display while scanning.
3. Press FUNC and then ATT again to turn off the global attenuation mode. Normal ATT appears on the
bottom line for about 2 seconds.
TURNING THE KEY TONE ON AND OFF
Each time you press any of the scanner’s keys, the scanner sounds a tone. You can turn the scanner’s key
tone off or on.
1. If the scanner is on, turn VOL OFF/MAX counterclockwise until it clicks to turn the scanner off.
2. Turn VOL OFF/MAX clockwise to turn the scanner on. Welcome To Digital Trunking appears in the
scanner’s display.
3. While Welcome To Digital Trunking appears, press 1 to turn on the key tone or 2 to turn it off.
USING Dimmer
You can change back lighting brightness using DIM. Pressing DIM key to rotate Dark lighting, Light Off, and
Light.
CHANGING THE DISPLAY CONTRAST
1. Press MAN.
2. Press FUNC and then 9. Use Up/Down keys to set contrast appears in the scanner’s display.
3. Press ^ or v to adjust the contrast.
4. Press ENT to set the display contrast.